html滑动仿悬浮球菜单效果的实现

 html,body{ 	width: 100%; 	height: 100%; 	margin: 0;padding: 0; }  /*导航图标*/ .NMH-g-navicon{ 	position: fixed; 	top: 40%; 	right: 020px; 	width: 100px; 	height: 100px; } .NMH-g-navicon.Jnmh-onleft{ 	right: auto; 	left: 020px; } /*导航图标logo按钮*/ .NMH-g-navicon .Jnmh-btnlogo{ 	position: absolute; 	display: block; 	width: 100px; 	height: 100px; 	top: 50%; 	right: 0; 	margin-top: -50px; 	border: 0; 	background: url(img/icon_128.png) no-repeat center center;     background-size: 95% 95%;     border: 1px solid rgba(0, 0, 0, 0.1);     box-shadow: rgba(0, 0, 0, 0.12) 0px 6px 10px 0px; 	outline: none; 	border-radius: 50%; 	z-index: 1; } .NMH-g-navicon .Jnmh-btnlogohover{ 	position: absolute; 	display: block; 	width: 100px; 	height: 100px; 	top: 50%; 	right: 0; 	margin: 0;padding: 0; 	margin-top: -50px; 	border: 0; 	overflow: hidden; 	/*background-color: red;*/ }  /*导航图标logo按钮-鼠标经过*/ .NMH-g-navicon.Jnmh-open .Jnmh-btnlogohover{ 	margin-top: -150px;	 	width: 200px; 	height: 300px; 	border-radius: 150px 0 0 150px; } .NMH-g-navicon.Jnmh-onleft .Jnmh-btnlogohover{ 	left: 0; 	right: auto; 	border-radius: 0 150px 150px 0; } /*导航图标菜单子容器*/ .NMH-g-navicon .Jnmh-m-submenu{ 	position: absolute; 	background-color: transparent; 	list-style: none; 	top: -020px; 	bottom: -020px; 	left: -020px; 	right: -020px; 	margin: 0; 	padding: 0; }  .NMH-g-navicon .Jnmh-m-submenu .Jnmh-subli{ 	position: absolute; 	width: 100%;height: 100%; 	transform: rotate(0deg);     -webkit-transform: rotate(0deg);     transition: all 0.8s ease-in-out; }  .Jnmh-m-submenu .Jnmh-subdl{ 	position: absolute;     left: 50%;     bottom: 100%;     width: 0;     height: 0;     line-height: 1px;     margin-left: 0;     background: #fff;     border-radius: 50%;     text-align: center;     font-size: 1px;     overflow: hidden;     cursor: pointer;     box-shadow: none;     transition: all 0.8s ease-in-out, color 0.1s, background 0.1s; } /*导航图标-展开菜单时*/ .NMH-g-navicon.Jnmh-open .Jnmh-m-submenu .Jnmh-subdl{ 	width: 80px;     height: 80px;     line-height: 80px;     margin-left: -40px;     box-shadow: 0 3px 3px rgba(0, 0, 0, 0.1);     font-size: 14px; } /*导航图标-三级菜单容器*/ .NMH-g-navicon.Jnmh-open .Jnmh-m-submenu .Jnmh-subdd{ 	position: absolute; 	line-height: normal; }

 <div id="nmh-navicon" class="NMH-g-plugin NMH-g-navicon"> 		<button class="Jnmh-btnlogo"></button> 		<ins class="Jnmh-btnlogohover"></ins> 		<ul class="Jnmh-m-submenu"> 			<li class="Jnmh-subli"> 				<dl class="Jnmh-subdl"> 					<dt class="NMH-subdt">电商平台</dt> 					<dd class="NMH-subdd"></dd> 				</dl> 			</li> 			<li class="Jnmh-subli"> 				<dl class="Jnmh-subdl"> 					<dt class="NMH-subdt">选品平台</dt> 					<dd class="NMH-subdd"></dd> 				</dl> 			</li> 			<li class="Jnmh-subli"> 				<dl class="Jnmh-subdl"> 					<dt class="NMH-subdt">会员升级</dt> 					<dd class="NMH-subdd"></dd> 				</dl> 			</li> 			<li class="Jnmh-subli"> 				<dl class="Jnmh-subdl"> 					<dt class="NMH-subdt">产品操作</dt> 					<dd class="NMH-subdd"></dd> 				</dl> 			</li> 			<li class="Jnmh-subli"> 				<dl class="Jnmh-subdl"> 					<dt class="NMH-subdt">个人中心</dt> 					<dd class="NMH-subdd"></dd> 				</dl> 			</li> 		</ul> 	</div>

 <script type="text/javascript" src="https://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script> <script type="text/javascript"> 	// 监听鼠标移入logo事件 	$(document).on('mouseenter','.Jnmh-btnlogo',function(){ 		$('#nmh-navicon').addClass('Jnmh-open'); 		GtoggleNavlogo(); 	}); 	// 监听鼠标移除导航球移除事件（展开收缩悬浮球为什么不直接监听#nmh-navicon而多了一步监听logo是为了减少边缘触发） 	$(document).on('mouseleave','#nmh-navicon',function(){ 		$('#nmh-navicon').removeClass('Jnmh-open'); 		GtoggleNavlogo(); 	}); 	var GtoggleNavlogo = function(){ 	    var li = $('#nmh-navicon').find('.Jnmh-subli'); 	    var lilen = li.length; 	    var avgDeg =  180/(lilen-1);// 平均角度 	    var initDeg = 0;// 起始方向角度 	    if($('#nmh-navicon').hasClass('Jnmh-onleft')){ 	    	// 如果悬浮球被拖拽到左边，则二级菜单则显示右侧 	    	li.css({transform: 'rotate(0deg)'}); 	    	initDeg =  180; 	    }else{ 	    	// 默认悬浮球在右边，二级菜单显示在左侧 	    	li.css({transform: 'rotate(-360deg)'}); 	    } 	    for(var i=0,j=lilen-1; i<lilen; i++,j--) { 	        var d =  initDeg - (i*avgDeg); 	        var z = initDeg?j:i; 	        // console.log(d); 	        $('#nmh-navicon').hasClass('Jnmh-open') ? GrotateNavlogo(li[z],d) : GrotateNavlogo(li[z],0); 	    } 	}; 	var GrotateNavlogo = function(dom,deg){ 		$({a:0}).animate({a:deg}, { 	        step: function(now,fx) { 	            $(dom).css({ transform: 'rotate('+now+'deg)' }); 	            $(dom).children().css({ transform: 'rotate('+(-now)+'deg)' }); 	        }, duration: 0 	    }); 	}  	// 鼠标拖动logo移动 	$(document).on('mousedown','.Jnmh-btnlogo',function(e_down){ 		var wrap = $('#nmh-navicon'); 		wrap.removeClass('Jnmh-open'); 		$('.Jnmh-m-submenu').hide(); 		GtoggleNavlogo(); 		 		var positionDiv = wrap.offset(); 	    var distenceX = e_down.pageX - positionDiv.left; 	    var distenceY = e_down.pageY - positionDiv.top + $(document).scrollTop(); 		$(document).mousemove(diy_move); 		function diy_move(e_move){ 			var x = e_move.pageX - distenceX; 	        var y = e_move.pageY - distenceY;  	        if (x < 0) { 	            x = 0; 	        } else if (x > $(document).width() - wrap.outerWidth(true)) { 	            x = $(document).width() - wrap.outerWidth(true); 	        }  	        if (y < 0) { 	            y = 0; 	        } else if (y > $(window).height() - wrap.outerHeight(true)) { 	            y = $(window).height() - wrap.outerHeight(true); 	        }  	        $(wrap).css({ 	            'left': x + 'px', 	            'top': y + 'px' 	        }); 		} 		$(document).mouseup(function() { 			var x = $(wrap).offset().left; 			var rm = '',ad = 'Jnmh-open'; 			if(x > $(document).width()/2){ 				x = $(document).width() - wrap.outerWidth(true) -10 ; 				rm = 'Jnmh-onleft'; 			}else{ 				x = 10; 				ad += ' Jnmh-onleft'; 			} 			$(wrap).css({left: x + 'px'}).addClass(ad).removeClass(rm); 			$('.Jnmh-m-submenu').show(); 			GtoggleNavlogo(); 	        $(document).unbind('mousemove',diy_move); 	    });  	});  </script>